Ener, S.S.EnerSkokov, K.P.K.P.SkokovKarpenkov, D.Y.D.Y.KarpenkovKuz'min, M.D.M.D.Kuz'minGutfleisch, O.O.Gutfleisch2022-03-042022-03-042015https://publica.fraunhofer.de/handle/publica/23969410.1016/j.jmmm.2015.02.001The remanence and coercivity of arc melted Mn75Ga30 can be substantially improved by cold rolling. For best performance the rolled material should be annealed at T=730 K in the presence of a magnetic field of 1 T. The so-obtained magnet has a remanence of 0.239 T and a coercivity of 1.24 T at room temperature. The underlying reason for the high coercivity and remanence is the increase of the content of a metastable ferrimagnetic DO22 phase at the expense of the normally stable anti-ferromagnetic DO19. Magnetic field significantly increases the nucleation rate of the ferromagnetic DO22 phase that leads to grain size refinement and as a consequence of improving remanence and coercive field.en666538journal article